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sftp

BETA

This component is mostly stable but breaking changes could still be made outside of major version releases if a fundamental problem with the component is found.

Consumes files from an SFTP server.

Introduced in version 1.0.0.

# Common config fields, showing default values
input:
  label: ""
  sftp:
    address: "" # No default (required)
    credentials:
      username: ""
      password: ""
      private_key_file: ""
      private_key_pass: ""
    paths: [] # No default (required)
    auto_replay_nacks: true
    scanner:
      to_the_end: {}
    watcher:
      enabled: false
      minimum_age: 1s
      poll_interval: 1s
      cache: ""

Metadata​

This input adds the following metadata fields to each message:

- sftp_path

You can access these metadata fields using function interpolation.

Fields​

address​

The address of the server to connect to.

Type: string

credentials​

The credentials to use to log into the target server.

Type: object

credentials.username​

The username to connect to the SFTP server.

Type: string
Default: ""

credentials.password​

The password for the username to connect to the SFTP server.

Secret

This field contains sensitive information that usually shouldn't be added to a config directly, read our secrets page for more info.

Type: string
Default: ""

credentials.private_key_file​

The private key for the username to connect to the SFTP server.

Type: string
Default: ""

credentials.private_key_pass​

Optional passphrase for private key.

Secret

This field contains sensitive information that usually shouldn't be added to a config directly, read our secrets page for more info.

Type: string
Default: ""

paths​

A list of paths to consume sequentially. Glob patterns are supported.

Type: array

auto_replay_nacks​

Whether messages that are rejected (nacked) at the output level should be automatically replayed indefinitely, eventually resulting in back pressure if the cause of the rejections is persistent. If set to false these messages will instead be deleted. Disabling auto replays can greatly improve memory efficiency of high throughput streams as the original shape of the data can be discarded immediately upon consumption and mutation.

Type: bool
Default: true

scanner​

The scanner by which the stream of bytes consumed will be broken out into individual messages. Scanners are useful for processing large sources of data without holding the entirety of it within memory. For example, the csv scanner allows you to process individual CSV rows without loading the entire CSV file in memory at once.

Type: scanner
Default: {"to_the_end":{}}
Requires version 1.0.0 or newer

delete_on_finish​

Whether to delete files from the server once they are processed.

Type: bool
Default: false

watcher​

An experimental mode whereby the input will periodically scan the target paths for new files and consume them, when all files are consumed the input will continue polling for new files.

Type: object
Requires version 1.0.0 or newer

watcher.enabled​

Whether file watching is enabled.

Type: bool
Default: false

watcher.minimum_age​

The minimum period of time since a file was last updated before attempting to consume it. Increasing this period decreases the likelihood that a file will be consumed whilst it is still being written to.

Type: string
Default: "1s"

# Examples

minimum_age: 10s

minimum_age: 1m

minimum_age: 10m

watcher.poll_interval​

The interval between each attempt to scan the target paths for new files.

Type: string
Default: "1s"

# Examples

poll_interval: 100ms

poll_interval: 1s

watcher.cache​

A cache resource for storing the paths of files already consumed.

Type: string
Default: ""